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                    Closing price on 5/27/2019
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                    | Open | 3.50 |  
                    | High | 3.50 |  
                    | Low | 3.30 |  
                    | Volume | 47,400 |  
                    | Split-adjusted Price | 3.50 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 5/27/2019 | +0.20 / +6.06% | 3.50 | 3.50 | 3.30 | 3.50 | 3.50 | 3.50 | 47,400 |   |  
            | 5/24/2019 | 0.00 / 0.00% | 3.50 | 3.50 | 3.30 | 3.30 | 3.46 | 3.30 | 18,100 |   |  			
            | 5/23/2019 | -0.10 / -2.94% | 3.50 | 3.50 | 3.30 | 3.30 | 3.32 | 3.30 | 933 |   |  
            | 5/22/2019 | +0.10 / +3.03% | 3.30 | 3.40 | 3.30 | 3.40 | 3.30 | 3.40 | 3,100 |   |  			
            | 5/21/2019 | +0.10 / +3.13% | 3.30 | 3.50 | 3.30 | 3.30 | 3.46 | 3.30 | 97,900 |   |  
            | 5/20/2019 | 0.00 / 0.00% | 3.20 | 3.20 | 3.20 | 3.20 | 3.20 | 3.20 | 10,200 |   |  			
            | 5/17/2019 | -0.10 / -3.03% | 3.20 | 3.30 | 3.20 | 3.20 | 3.28 | 3.20 | 23,600 |   |  
            | 5/16/2019 | +0.10 / +3.13% | 3.20 | 3.50 | 3.20 | 3.30 | 3.44 | 3.30 | 96,900 |   |  			
            | 5/15/2019 | 0.00 / 0.00% | 3.30 | 3.30 | 3.20 | 3.20 | 3.28 | 3.20 | 7,200 |   |  
            | 5/14/2019 | 0.00 / 0.00% | 3.20 | 3.40 | 3.20 | 3.20 | 3.38 | 3.20 | 27,300 |   |  			
            | 5/13/2019 | -0.10 / -3.03% | 3.20 | 3.20 | 3.20 | 3.20 | 3.20 | 3.20 | 6,427 |   |  
            | 5/10/2019 | +0.10 / +3.13% | 3.20 | 3.50 | 3.00 | 3.30 | 3.46 | 3.30 | 195,500 |   |  			
            | 5/9/2019 | +0.20 / +6.67% | 3.00 | 3.30 | 3.00 | 3.20 | 3.23 | 3.20 | 98,300 |   |  
            | 5/8/2019 | +0.20 / +7.14% | 2.80 | 3.00 | 2.70 | 3.00 | 3.00 | 3.00 | 85,600 |   |  			
            | 5/7/2019 | -0.20 / -6.67% | 2.90 | 2.90 | 2.80 | 2.80 | 2.86 | 2.80 | 5,000 |   |  
            | 5/6/2019 | 0.00 / 0.00% | 2.90 | 3.10 | 2.70 | 3.00 | 3.01 | 3.00 | 44,800 |   |  			
            | 5/3/2019 | 0.00 / 0.00% | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 | 3.00 | 0 |   |  
            | 5/2/2019 | -0.10 / -3.23% | 3.20 | 3.30 | 3.00 | 3.00 | 3.23 | 3.00 | 27,200 |   |  			
            | 4/26/2019 | 0.00 / 0.00% | 2.90 | 3.20 | 2.80 | 3.10 | 3.15 | 3.10 | 856,600 |   |  
            | 4/25/2019 | +0.10 / +3.33% | 3.00 | 3.10 | 2.90 | 3.10 | 3.01 | 3.10 | 503,700 |   |  			
            | 4/24/2019 | -0.10 / -3.23% | 3.00 | 3.10 | 3.00 | 3.00 | 3.06 | 3.00 | 138,000 |   |  
            | 4/23/2019 | +0.20 / +6.90% | 2.90 | 3.10 | 2.70 | 3.10 | 2.98 | 3.10 | 158,900 |   |  			
            | 4/22/2019 | +0.10 / +3.57% | 2.90 | 3.00 | 2.80 | 2.90 | 3.00 | 2.90 | 104,600 |   |  
            | 4/19/2019 | -0.10 / -3.45% | 2.80 | 2.90 | 2.80 | 2.80 | 2.83 | 2.80 | 3,300 |   |  			
            | 4/18/2019 | 0.00 / 0.00% | 3.00 | 3.00 | 2.90 | 2.90 | 3.00 | 2.90 | 12,100 |   |  
            | 4/17/2019 | 0.00 / 0.00% | 3.00 | 3.10 | 2.70 | 2.90 | 2.98 | 2.90 | 156,700 |   |  			
            | 4/16/2019 | 0.00 / 0.00% | 3.00 | 3.10 | 2.90 | 2.90 | 2.99 | 2.90 | 314,900 |   |  
            | 4/12/2019 | 0.00 / 0.00% | 3.00 | 3.10 | 2.90 | 2.90 | 3.00 | 2.90 | 288,700 |   |  			
            | 4/11/2019 | +0.20 / +7.41% | 2.90 | 2.90 | 2.90 | 2.90 | 2.90 | 2.90 | 3,800 |   |  
            | 4/10/2019 | -0.30 / -10.00% | 3.00 | 3.00 | 2.70 | 2.70 | 2.84 | 2.70 | 799,000 |   |  |